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Which power of a telescope might be expressed as 0.5 seconds or arc?
which power of a telescope might be expressed as "0.5 seconds of arc"?
What is the conversion of Time Units and Arc Units?
Arc units are measured in Degrees with seconds. A conversion to Time would be: 0 min 4 seconds = 0 degrees 1 second 0 min 4 sec = 0o 01' Simplified then would be for every 4 seconds of time you would gain one second of a degree of arc.
Does '' stand for feet in measurement?
A double quote (") can mean:seconds when measuring angles, eg 52° 5' 10" is 52 degrees, 5 minutes, 10 seconds (of arc); there are 60 minutes (of arc) in 1 degree and 60 seconds (of arc) in 1 minute (of arc)inches when measuring lengths, eg 1 yard = 36" is 1 yards is 36 inches.
What is the small-angle formula?
The small angle formula is used for measuring the distance to a far away object when the actual size and angular size are known, or for finding out the actual size of a faraway object when the distance to the object and angular size are known. In arc-seconds: a = 206265 x D/d where a = the angular size of the object in arc-seconds D = the actual linear size of an object in km d = the distance to the object in km 206265 = the number of arc-seconds in a complete circle divided by 2pi In Radians: a = D/d where a = angular size of object in radians
What is Hg in Au?
Hg= Mercury Au= Gold
